var sensitivity = 15.0;
var mouseSensitivity = 1.0;

function Update () 
{
	transform.Translate(Input.GetAxis("Horizontal") * sensitivity * Time.deltaTime, 0, Input.GetAxis("Vertical") * sensitivity * Time.deltaTime);
	transform.Rotate( -Input.GetAxis("Mouse Y") * mouseSensitivity, 0, 0);
	transform.RotateAround(transform.position, Vector3.up, Input.GetAxis("Mouse X") * mouseSensitivity);
}